public class Example3_7{
	public static void main(String args[]){
		int sum=0,i,j;
		for(i=1;i<=10;i++){
			if(i%2==0){
				continue;
			}
			sum+=i;
		}
		System.out.println("sum="+sum);
		for(j=2;j<=100;j++){
			for(i=2;i<=j/2;i++){
				if(j%i==0)
					break;
			}
			if(i>j/2){
				System.out.println(j+"是素数");
			}
		}
	}
}
